Answer: Red blood cells, also referred to as red cells, red blood corpuscles, haematids, erythroid cells or erythrocytes, are the most common type of blood cell and the vertebrate's principal means of delivering oxygen to the body tissues—via blood flow through the circulatory system.
Explanation:
I think that it is Lung cancer that is mainly caused by tobacco
A) True. Sedatives are medications used to induce sleep.
I believe all of the above is correct.
